贾斯珀听众?从 Tomcat 8 升级到 Tomcat 9

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问题描述

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由于 Tomcat 8.0 已经结束，我想将我的应用程序直接升级到 Tomcat 9.

Since Tomcat 8.0 has reached end of life, I want to upgrade my application directly to Tomcat 9.

当我将基于 Java 的应用程序从本地部署到我的服务器时，我有一个覆盖 server.xml 的脚本.我将服务器升级到了 tomcat 9 并尝试将我的应用程序放在那里，但在尝试启动它时出现错误.

When I deploy my Java based App from local to my server, I have a script which overrides the server.xml. I upgraded the server to a tomcat 9 and tried to put my application in there, but I get an error when trying to start it.

org.apache.tomcat.util.digester.Digester.startElement Begin event threw exception
java.lang.ClassNotFoundException: org.apache.catalina.core.JasperListener
at java.URLClassLoader.findClass(URLClassLoader.java:381)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)

Tomcat 9 不知道 JasperListener.我在 google 上搜索了这个问题，并从 apache 找到了Jasper How to"页面，但我不明白.现在是否安装了 Jasper，而无需在 server.xml 中插入 JasperListener?从 Tomcat 8 升级到 9 时，我还需要更新什么吗?

Tomcat 9 does not know JasperListener. I googled this issue and found the "Jasper How to" page from apache, but I do not get it. Is Jasper now installed without me having to insert the JasperListener in the server.xml? And do I have to update anything else when upgrading from Tomcat 8 to 9?

推荐答案

org.apache.catalina.core.JasperListener 不再需要.因此，如果它存在于您的 server.xml 中 - 将其注释掉！

org.apache.catalina.core.JasperListener is no longer required. So if it exists in your server.xml - comment it out!

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